So, he's offering this challenge. Anyone who successfully finds an illegal gun sale and the group will donate $10,000 to a charity of that person's choice.
But anyone who accepts and fails to find one must pledge to attend an, "educational day about the proper and safe use of firearms," Schwartz said.
Supporters maintain the gun show is a safe and legal place for people to learn from each other while enjoying their hobby.
It's been held at the Del Mar Fairgrounds five times a year for decades and while opponents don't like the idea of any kind of gun show, their main concern is that this one is held on state-owned land.